Submission #896531

#	Time	Username	Problem	Language	Result	Execution time	Memory
896531		duckindog	Stove (JOI18_stove)	C++14	100 / 100	14 ms	2016 KiB

stove

// from duckindog wth depression
#include<bits/stdc++.h>

using namespace std;

const int N = 1e5 + 10;
int n, k;
int t[N];
int d[N];

int32_t main() {
  cin.tie(0)->sync_with_stdio(0);

  if (fopen("duck.inp", "r")) {
    freopen("duck.inp", "r", stdin);
    freopen("duck.out", "w", stdout);
  }
  cin >> n >> k;
  for (int i = 1; i <= n; ++i) cin >> t[i];
  for (int i = 1; i < n; ++i) d[i] = t[i + 1] - t[i];
  sort(d + 1, d + n, greater<int>());
  int answer = k;
  for (int i = 1 + k - 1; i < n; ++i) answer += d[i];
  cout << answer;

}

Compilation message (stderr)

stove.cpp: In function 'int32_t main()':
stove.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("duck.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen("duck.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50